In it, Academy Award winner J.K. Simmons plays two versions of Howard Silk, one a lowly cog at a United Nations agency, the other, a dangerous, highly trained spy from a parrel universe. Simmons gives a tour de force of a performance, playing the two versions of the same character with a magnitude of subtle differences. The way he talks. The posture. The mannerisms. It's really brilliant to see in action and side-by-side. Alongside Simmons is Harry Llyod, who famously played Viserys Targaryen in the first season of Game of Thrones, and Italian actress Sara Serraiocco.